Instruction Manual
MAX15303 PMBus Command Set User’s Guide 
Page 37 of 52 
MFR_SERIAL 
Reference: 
Standard Command 
Lockable: 
Yes 
Command Code: 
0x9E 
Format: 
ASCII string 
Data Bytes: 
13 
Units: 
N/A 
Transfer: 
Read/Write Block 
Factory Value: 
String of 13 spaces (ASCII 0x20) 
Description/Notes: 
See Section 22.2.6 of the PMBus Specification Part II. 
Note that the MAX15303  implements MFR_SERIAL as a fixed-width string, not as part of a shared 
memory space. 
IC_DEVICE_ID 
Reference: 
Standard Command 
Lockable: 
N/A 
Command Code: 
0xAD 
Format: 
ASCII string 
Data Bytes: 
12 
Units: 
N/A 
Transfer: 
Read Block 
Factory Value: 
MAX15303AA00 
Description/Notes: 
See Section 22.2.7 of the PMBus Specification Part II. 
Note that the MAX15303 implements IC_DEVICE_ID as a fixed-width string, not as part of a shared 
memory space. 
IC_DEVICE_REV 
Reference: 
Standard Command 
Lockable: 
N/A 
Command Code: 
0xAE 
Format: 
ASCII string 
Data Bytes: 
8 
Units: 
N/A 
Transfer: 
Read Block 
Factory Value: 
Firmware revision (see Description) 
Description/Notes: 
See Section 22.2.8 of the PMBus Specification Part II. 
Note that the MAX15303 implements IC_DEVICE_REV as a fixed-width string, not as part of a shared 
memory space. 
The default value is the firmware revision number stored as an ASCII string, typically a 4-digit number. 
The Maxim PowerTool™ GUI uses this information to identify the supported command set for a 
particular slave device. 










